Rubber To Metal Bonding Adhesive 821 Equivalent To Cilbond 80ET 55E

Rubber to Metal Bonding Adhesive 821 Equivalent to Cilbond 80ET,55E

1. Application

821 is a heat vulcanization bonding adhesive as cover coat for rubber and various metals.

2. Characteristics

• It is a high strength bonding adhesive for unvulcanized rubber and metals coated with 813. The applicable rubbers include NR, CR, BR, SBR, PIPR, IIR, EPR, EPDM.
• It is non-toxic, easily operated.
• It can be applied with different ways like dip coating, spraying, brushing, and roller coating.
• It has excellent resistance to heating, water, solvent, oil, salt, corrosion etc.
• It has high bonding strength, stability and long durability.

3. Physical Properties

4. Applying 821

• Surface Preparation: All bonding surface must be contaminant (such as oil, rust, oxide etc) free to reach optimum bonding effects. Surfaces should be grit-blasted, and then ideally degreased. Apply 813 and wait it becomes dry.
• Mixing: Homogeneous mix must be ensured before applying bonding agent.

• Dilution: Proper quantity dilutes can also be added according to dosage. The diluted bonding agent cannot be stored for long time.
• Brushing: Unnecessary for dilution
• Roller coating: 100 portion of 821 with 10-15 portion diluents
• Dipping coating: 100 portion of 821 with 10-15 portion diluents
• Spraying: 100 portion of 821 with 50 portion diluents
• Coating thickness: The coating should be uniform. Drying coating thickness is 15-25 microns.
• Drying: After applying 821, it should be left for 45-60minutes to dry at room temperature. Pre-warming or heating will speed up drying.
• Storage: It should be stored in dry environment at room temperature. Avoid long time exposure in high humidity and temperature environment.

• After treatment: Before heating vulcanization, use cloth strip soaked with xylene to clean the excessive bonding agent. Once cured, dilutes cannot clean the bonding agent.
• Vulcanization: For optimum adhesion effects, rubber and bonding agent should be vulcanized at the same time. When the coated parts are placed in the mould, fill rubber inside and then close the mould to start vulcanization immediately. Recommended vulcanization temperature is 145-185℃. Recommended vulcanization time is 5-60minutes. Vulcanization pressure is according to practical situation.

5. Notes

• Close the diluents container tightly after use.
• The diluents vapor is hazardous. Prevent long time inhalation or skin contact in working place.

6. Packing

3.5kg/drum; 18kg/drum

Qingdao Exceed Fine Chemicals Co., Ltd is a high-tech enterprise that integrates manufacturing and trading. We specialize in the production of polyurethane-based products.

Our company is dedicated to investing in research and development of cutting-edge products, collaborating with leading Chinese universities and institutions. We have successfully developed a heat-vulcanization, environmentally friendly bonding adhesive that rivals the quality of world-renowned brands like Lord and Dow.

At Exceed, we believe in the power of science

Qingdao Exceed Fine Chemicals boasts a team of over 30 skilled technicians, supported by advanced manufacturing equipment and robust production processes. We maintain an independent R&D institute and foster strong collaborations with leading universities and research institutions to continuously enhance our production processes, product quality, and performance.

With decades of dedicated efforts, we have successfully exported our products to markets across the globe, including Europe, Asia, North America, South America, Oceania, and Africa.

Furthermore, leveraging our extensive domestic network, we act as a reliable purchasing agent, assisting customers in sourcing specific materials according to their unique requirements.

 Furthermore, we employ a dedicated team of quality control (QC) professionals with expertise in the field of chemicals. This rigorous quality control ensures consistent and reliable product quality for our valued customers.

Currently, we achieve annual export sales exceeding USD 30 million to over 30 countries worldwide, encompassing a diverse product range including polyurethane chemicals, heat-vulcanization environmental friendly bonding adhesive etc.

We understand that customers prioritize competitive pricing, exceptional quality, and consistent product availability. We firmly believe that Exceedchem is the ideal partner to fulfill your specific needs.

As a trusted purchasing agent for clients worldwide, we leverage our extensive experience to source high-quality products at competitive prices. Our primary objective is to deliver the most cost-effective solutions while maintaining the highest standards of quality.